News Corp. (NWSA)'s British publishing unit asked a judge to keep secret a series of new claims being made by victims of phone hacking at its News of the World tabloid in preparation for a group trial scheduled for February.

The details of the allegations, which could be used to seek punitive damages, should be kept from the public unless they are approved at a Sept. 7 hearing and added to the victims' so- called generic claims, Judge Geoffrey Vos said today in London.

The claims outline "generalized activities which we think are unsustainable" if challenged, Michael Silverleaf, the lawyer for the News International unit, said at the hearing. "They may change the approach we are taking" to the case.

News Corp., the New York-based company controlled by Rupert Murdoch, is trying to move on from the scandal after the civil case and a parallel criminal probe that began last year revealed a cover up and led to the closure of the tabloid and the arrests of more than 60 people, including another journalist today.